is your ring a 3 carat solitaire? or is it total weight of many smaller stones ? if it is one stone that is 3 carats you must have a GIA or other reputable certificate that lists all measurments and other factors such as color and clarity of your ring. you should also have an appraisal. if you do not have this, you need to go get it. if you have a solitaire did they give you in writing a guaranteed trade in price in case you want a bigger stone later?

if it is a ring of smaller stones do you have a certificate telling you exactly what the quality of each stone is and how big it is? and how many carats in weight the whole ring is, in writing?

Buying a diamond is just like any other purchase. Do your homework. It’s ignorant to walk into a store totally relying on the salespeople who have a vested interest in your purchase to teach you everything. You wouldn’t walk into a car dealership and say “I want a car..four wheels please?”….no usually you have done some research and know what model, at the very least what manufacture.

IMO, a 3 carat is not a good size. Anything above 2 carats is too “look at me!” and just gets in the way. They are more likely to snag on something or get knocked around. I would much rather purchase a smaller flawless diamond than go halfway and get the bigger rock…but that is all personal decision and why you need to intimately aqquaint yourself with cut, clarity, color, and carat.